Vegetarianism and intelligence

Higher IQ at age 10 years was associated with an increased likelihood of being vegetarian at age 30... IQ remained a statistically significant predictor of being vegetarian as an adult after adjustment for social class (both in childhood and currently), academic or vocational qualifications, and sex- IQ in childhood and vegetarianism in adulthood

Kanazawa claims it's because the purpose of intelligence is to respond to new experiences; vegetarianism being evolutionarily "new" implies that only smarter people will accept it.

@flywtink: For example, it might be that going to college convinces people to become vegetarian. So the relationship between intelligence and vegetarianism would only be accidental - the real relationship would be between education and vegetarianism.